Dual-Server Public-Key Encryption With Keyword Search for Secure Cloud Storage
Dual-Server Public-Key Encryption With Keyword Search for Secure Cloud Storage
复制标题
双服务器公钥加密，带关键字搜索，实现安全云存储
DOI：
10.1109/tifs.2015.2510822
复制
发表时间：
2016-04-01
影响因子：
6.8
通讯作者：
Wang, Xiaofen
中科院分区：
文献类型：
--
作者：
Chen, Rongmao;Mu, Yi;Wang, Xiaofen
可搜索加密在保护安全可搜索云存储中的数据隐私方面越来越受到关注。在本文中，我们研究了一个著名的密码原语，即公钥加密与关键字搜索（PEKS），这是非常有用的云存储的许多应用程序的安全性。不幸的是，它已被证明，传统的PEKS框架遭受一个固有的不安全称为内部关键字猜测攻击（KGA）的恶意服务器发起的。为了解决这个安全漏洞，我们提出了一个新的PEKS框架命名为双服务器PEKS（DS-PEKS）。作为另一个主要贡献，我们定义了一个新的变种的光滑投影散列函数（SPHF）被称为线性和同态SPHF（LH-SPHF）。然后，我们展示了一个通用的建设安全DS-PEKS从LH-SPHF。为了说明我们的新框架的可行性，我们提供了一个有效的实例化的一般框架，从决策Diffie-Hellman的LH-SPHF，并表明它可以实现强大的安全性对内部的KGA。
Searchable encryption is of increasing interest for protecting the data privacy in secure searchable cloud storage. In this paper, we investigate the security of a well-known cryptographic primitive, namely, public key encryption with keyword search (PEKS) which is very useful in many applications of cloud storage. Unfortunately, it has been shown that the traditional PEKS framework suffers from an inherent insecurity called inside keyword guessing attack (KGA) launched by the malicious server. To address this security vulnerability, we propose a new PEKS framework named dual-server PEKS (DS-PEKS). As another main contribution, we define a new variant of the smooth projective hash functions (SPHFs) referred to as linear and homomorphic SPHF (LH-SPHF). We then show a generic construction of secure DS-PEKS from LH-SPHF. To illustrate the feasibility of our new framework, we provide an efficient instantiation of the general framework from a Decision Diffie-Hellman-based LH-SPHF and show that it can achieve the strong security against inside the KGA.